Eczema Treatment Care

I recently had a major haircut. I had my chin length bob cut down to about an inch or two of hair to remove the relaxed hair since I wanted to grow my natural hair out again. I have done this before about a year ago with much longer hair with no issues. Scalp and hair were fine that time around.
This time, immediately as the clippers began going through my hair, my scalp began to feel irritated and itchy. But I attributed it to not being a hair cut regular. Now a week later my scalp is still irritated and itchy. Very sore and I can barely sleep because my hair is also so dry and brittle when I press my head to the pillow it hurts and itches more. I haven’t been scratching it for about 4 days and my head is still as sore as it was when I got it cut. I put in the same oil and leave in conditioners I used once before, and nothing is working. I also visited the RediClinic, where the nurse prescribed Nizerol and a steroid. She said she wasn’t sure if it was contact dermatitis or a fungal infection, but knew from examination it wasn’t lice. Haven’t tried the steroid yet, but no luck with the shampoo. When she examined my head she said it was very flaky. And although I have had a flaky scalp forever (without these current issues) I also tried T Gel and Selsom Blue “just in case”, no luck.
I don’t know what to do now. My natural hair has never been this dry before, and my scalp never, ever, ever felt so miserable. I just can’t fathom how a haircut could cause such damage or what I can do to feel better and get my hair a little less straw-like…
Maybe blunt clippers???
Thanks to anyone and everyone for their help.